Texas Instruments AWR2944EVM, User Manual, Page: 31 / 36

Additionally, the SOP[4:3] signals defines the XTAL clock input as per the below configurations provided in Table
2-13 .
Table 2-13. SOP[4:3] Modes
Reference Usage Comments
R303, R312 Populated.
R301,R309 unpopulated
SOP[4:3] 00 = 40 MHz (Default state)
R301, R312 Populated.
R303,R319 unpopulated
01 = 45.1584 MHz
R303, R309 Populated.
R301,R312 unpopulated
10 = 49.152 MHz
R301, R309 Populated.
R303,R312 unpopulated 11 = 50 MHz
2.9.3 I2C Connections
The board features temperature sensor for measuring onboard temperature, current sensors for current
measurement for 1.2-V, 1.8-V, 3.3-V, 1V0_RF1, and 1V0_RF2 AWR2944 supply rails and EEPROM for storing
board ID. These are connected to the AWR2944EVM through I2C bus.
Table 2-14 shows the list of I2C devices available in AWR2944EVM board and its address.
Table 2-14. I2C Device Addresses
Sensor Type Reference Designator Part Number Slave Address
Temp sensor U24 TMP112AIDRLR 0x49
Current sensor for 3.3-V rail U12 INA226AIDGSR 0x44
Current sensor for 1.8-V rail U11 INA226AIDGSR 0x41
Current sensor for 1.2-V Digital
rail U9 INA226AIDGSR 0x40
Current sensor for 1.0-V RF1 rail U22 INA226AIDGSR 0x42
Current sensor for 1.0-V RF2 rail U30 INA226AIDGSR 0x43
EEPROM U28 CAV24C02WE-GT3 0x50
2.9.4 Push Buttons
Table 2-15. Push Button Switches
Reference Usage Comments Image
SW1 RESET
This Switch is used to RESET the
AWR2944, PMIC, XDS110 and FTDI
device.
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